/* ============================================
   17Talk — Premium Chinese Learning Platform
   Design System
   ============================================ */

:root {
    /* Colors — Refined Luxury Palette */
    --primary: #8C1C2E;
    --primary-dark: #5E0F1A;
    --primary-light: #FDF2F4;
    --accent: #B8860B;
    --accent-light: #F9F2E0;
    --dark: #161618;
    --dark-soft: #2A2A2E;
    --cream: #F7F4EF;
    --warm-white: #FBFAF8;
    --white: #FFFFFF;
    --text: #1E1E20;
    --text-light: #5C5C60;
    --text-muted: #999999;
    --border: #E8E5DF;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.06);
    --shadow-lg: 0 24px 60px rgba(0,0,0,0.08);
    --shadow-xl: 0 40px 100px rgba(0,0,0,0.12);

    /* Typography */
    --font-display: Georgia, 'Times New Roman', 'Songti SC', serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;

    /* Spacing */
    --max-width: 1200px;
    --section-padding: 120px 24px;
    --section-padding-sm: 80px 24px;
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--warm-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 560px;
    margin: 0 auto;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--primary);
    background: var(--primary-light);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 1.25rem;
}

.section-tag--light {
    color: var(--accent-light);
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
}

.section-title--light {
    color: var(--white);
}

.section-subtitle--light {
    color: rgba(255,255,255,0.8);
}

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
}

.nav.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 12px 0;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 44px;
    width: auto;
    display: block;
}

.footer-logo-img {
    height: 52px;
    width: auto;
    display: block;
    margin-bottom: 0.75rem;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--dark);
    font-weight: 400;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-soft);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary);
}

.btn-nav {
    padding: 10px 24px;
    font-size: 0.85rem;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(196, 30, 58, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--dark);
    border-color: var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-full {
    display: block;
    text-align: center;
    width: 100%;
}

.btn-large {
    padding: 18px 48px;
    font-size: 1.1rem;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #0D0D12 0%, #12121A 25%, #1A1820 55%, #0F0F16 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 25% 45%, rgba(140, 28, 46, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 25%, rgba(184, 134, 11, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(140, 28, 46, 0.05) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 120px 24px 80px;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    color: var(--accent-light);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 8px 20px;
    border: 1px solid rgba(200, 150, 62, 0.3);
    border-radius: 100px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    background: rgba(200, 150, 62, 0.05);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    color: var(--white);
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero-title-accent {
    background: linear-gradient(135deg, #D4956B, #C9A96E);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.7);
    max-width: 640px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-cta .btn-outline {
    border-color: rgba(255,255,255,0.3);
    color: var(--white);
}

.hero-cta .btn-outline:hover {
    border-color: var(--primary);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
}

.stat-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ============================================
   Section Container
   ============================================ */

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

/* ============================================
   Courses
   ============================================ */

.courses {
    padding: var(--section-padding);
    background: var(--white);
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}

.course-card {
    background: var(--warm-white);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s;
}

.course-card:hover::before {
    opacity: 1;
}

.course-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.course-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    font-family: var(--font-body);
    font-weight: 700;
}

.course-card > p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.course-features {
    list-style: none;
    margin-bottom: 1.25rem;
}

.course-features li {
    font-size: 0.85rem;
    color: var(--text);
    padding: 4px 0;
    padding-left: 1.25rem;
    position: relative;
}

.course-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.course-level {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   Page Header (for sub-pages)
   ============================================ */

.page-header {
    padding: 160px 24px 80px;
    background: linear-gradient(160deg, #0D0D12 0%, #12121A 25%, #1A1820 55%, #0F0F16 100%);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(140, 28, 46, 0.06) 0%, transparent 55%),
        radial-gradient(ellipse at 70% 30%, rgba(184, 134, 11, 0.03) 0%, transparent 50%);
}

.page-header .section-tag {
    color: var(--accent);
    background: rgba(184, 134, 11, 0.1);
    border: 1px solid rgba(184, 134, 11, 0.2);
}

.page-header .section-title {
    color: var(--white);
}

.page-header .section-subtitle {
    color: rgba(255,255,255,0.65);
}

/* Section background alternates */
.section-cream {
    background: var(--cream);
}

.section-alt {
    background: var(--cream);
}

.section-dark {
    background: var(--dark);
    color: var(--white);
}

/* Active nav link */
.nav-links a.active {
    color: var(--primary);
    font-weight: 600;
}

/* ============================================
   Flashcard Widget
   ============================================ */

.flashcard-widget {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 2.5rem;
    box-shadow: var(--shadow-md);
}

.flashcard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.flashcard-header h3 {
    font-family: var(--font-body);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark);
}

.flashcard-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.flashcard-select {
    padding: 8px 14px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 0.85rem;
    font-family: var(--font-body);
    background: var(--warm-white);
    cursor: pointer;
    outline: none;
}

.flashcard-select:focus {
    border-color: var(--primary);
}

.flashcard-counter {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    min-width: 60px;
    text-align: right;
}

/* Stage */
.flashcard-stage {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
    perspective: 1000px;
}

.flashcard-card {
    width: 100%;
    max-width: 500px;
    min-height: 260px;
    position: relative;
    cursor: pointer;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.flashcard-card.flipped {
    transform: rotateY(180deg);
}

.flashcard-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.flashcard-front {
    background: linear-gradient(145deg, #fff 0%, #FDF2F4 100%);
    border: 2px solid var(--border);
}

.flashcard-char {
    font-size: 2.8rem;
    font-family: 'Noto Serif SC', serif;
    font-weight: 700;
    color: var(--dark);
    text-align: center;
    margin-bottom: 0.5rem;
}

.flashcard-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.flashcard-audio-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0.5rem auto;
}

.flashcard-audio-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(184,134,11,0.3);
}

.flashcard-audio-btn.playing {
    animation: audioPulse 0.6s ease-in-out infinite;
}

@keyframes audioPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); background: var(--primary); }
}

.flashcard-example {
    display: block;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    margin-top: 0.75rem;
    font-style: italic;
    text-align: center;
    padding: 0 1rem;
}

.flashcard-back {
    background: linear-gradient(145deg, var(--dark) 0%, #2A2A2E 100%);
    transform: rotateY(180deg);
}

.flashcard-pinyin {
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.75rem;
    text-align: center;
}

.flashcard-meaning {
    font-size: 1.5rem;
    color: rgba(255,255,255,0.9);
    text-align: center;
}

/* Actions */
.flashcard-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.flashcard-btn {
    padding: 10px 20px;
    border: 2px solid var(--border);
    background: var(--white);
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-body);
    color: var(--text);
}

.flashcard-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.flashcard-btn--flip {
    background: var(--dark);
    color: var(--white);
    border-color: var(--dark);
    padding: 12px 32px;
    font-size: 0.9rem;
}

.flashcard-btn--flip:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.flashcard-btn--know {
    border-color: #2E7D32;
    color: #2E7D32;
}

.flashcard-btn--know:hover {
    background: #E8F5E9;
    border-color: #2E7D32;
}

.flashcard-btn--dontknow {
    border-color: #E65100;
    color: #E65100;
}

.flashcard-btn--dontknow:hover {
    background: #FFF3E0;
    border-color: #E65100;
}

/* Progress */
.flashcard-progress {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.flashcard-bar {
    flex: 1;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.flashcard-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 4px;
    transition: width 0.5s ease;
}

.flashcard-stats {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

@media (max-width: 768px) {
    .flashcard-card { min-height: 220px; }
    .flashcard-char { font-size: 2rem; }
    .flashcard-pinyin { font-size: 1.4rem; }
    .flashcard-meaning { font-size: 1.1rem; }
}

/* ============================================
   Learning Hub
   ============================================ */

.learn {
    padding: var(--section-padding);
}

.learn-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.learn-tab {
    padding: 10px 24px;
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-light);
    font-family: var(--font-body);
}

.learn-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.learn-tab.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.learn-search {
    position: relative;
    max-width: 480px;
    margin: 0 auto 2.5rem;
}

.learn-search-input {
    width: 100%;
    padding: 14px 48px 14px 20px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 0.95rem;
    font-family: var(--font-body);
    background: var(--warm-white);
    transition: all 0.3s ease;
    outline: none;
}

.learn-search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.06);
}

.learn-search-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
}

.learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.25rem;
}

.learn-card {
    background: var(--warm-white);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.75rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.learn-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: transparent;
    transform: translateY(-2px);
}

.learn-card.hidden {
    display: none;
}

.learn-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.learn-badge {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    border-radius: 100px;
}

.badge-beginner {
    background: #E8F5E9;
    color: #2E7D32;
}

.badge-intermediate {
    background: #FFF3E0;
    color: #E65100;
}

.badge-advanced {
    background: #FCE4EC;
    color: #C62828;
}

.badge-culture {
    background: #F3E5F5;
    color: #6A1B9A;
}

.learn-type {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.learn-new-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.learn-card h3 {
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.learn-card > p {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
}

.learn-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.learn-progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.learn-btn {
    display: block;
    text-align: center;
    padding: 12px;
    background: var(--dark);
    color: var(--white);
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.learn-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* ============================================
   Method
   ============================================ */

.method {
    padding: var(--section-padding);
    background: var(--cream);
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.method-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.method-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.method-card--dark {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
}

.method-card--dark h3 {
    color: var(--white);
}

.method-card--dark p {
    color: rgba(255,255,255,0.6);
}

.method-card--dark .method-number {
    color: var(--primary);
    opacity: 0.3;
}

.method-card--dark:hover {
    background: rgba(255,255,255,0.07);
    border-color: rgba(255,255,255,0.12);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.method-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: -1rem;
}

.method-card h3 {
    font-family: var(--font-body);
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.method-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ============================================
   Pricing
   ============================================ */

.pricing {
    padding: var(--section-padding);
    background: var(--white);
}

.pricing-cards {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: stretch;
    flex-wrap: wrap;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    flex: 1;
    min-width: 320px;
    max-width: 420px;
    background: var(--warm-white);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    position: relative;
}

.pricing-card--featured {
    background: var(--white);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg);
    transform: scale(1.03);
}

.pricing-ribbon {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 6px 24px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding-top: 0.5rem;
}

.pricing-header h3 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.pricing-subtitle {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.75rem;
}

.pricing-price {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.price-currency {
    font-size: 1.5rem;
    vertical-align: super;
}

.price-period {
    font-size: 1.25rem;
    color: var(--text-light);
    font-weight: 400;
}

.price-note {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* ============================================
   Culture Banner
   ============================================ */

.culture {
    padding: var(--section-padding);
    background: linear-gradient(160deg, #0D0D12 0%, #1A1820 50%, #12121A 100%);
    position: relative;
    overflow: hidden;
}

.culture::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(184, 134, 11, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(140, 28, 46, 0.05) 0%, transparent 50%);
}

.culture-content {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.culture-content .section-header {
    margin-bottom: 3rem;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.culture-item {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.culture-item:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}

.culture-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    display: block;
}

.culture-item h4 {
    font-family: var(--font-body);
    color: rgba(255,255,255,0.85);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ============================================
   Testimonials
   ============================================ */

.testimonials {
    padding: var(--section-padding);
    background: var(--cream);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.testimonial-stars {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.testimonial-text {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text);
    font-style: italic;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--dark);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.testimonial-author strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
}

.testimonial-author span {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* ============================================
   About
   ============================================ */

.about {
    padding: var(--section-padding);
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-motto {
    font-weight: 600;
    color: var(--dark) !important;
    font-size: 1.05rem !important;
    padding-top: 0.5rem;
}

.about-numbers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.about-stat {
    background: var(--cream);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.about-stat:hover {
    background: var(--dark);
}

.about-stat:hover .about-stat-number,
.about-stat:hover .about-stat-label {
    color: var(--white);
}

/* Dark section overrides for About */
.section-dark .about-text p {
    color: rgba(255,255,255,0.6);
}

.section-dark .about-motto {
    color: var(--white) !important;
}

.section-dark .about-stat {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.06);
}

.section-dark .about-stat-number {
    color: var(--accent);
}

.section-dark .about-stat-label {
    color: rgba(255,255,255,0.5);
}

.section-dark .about-stat:hover {
    background: rgba(255,255,255,0.1);
}

.section-dark .about-stat:hover .about-stat-number {
    color: var(--white);
}

.section-dark .about-stat:hover .about-stat-label {
    color: rgba(255,255,255,0.8);
}

.section-dark .section-title {
    color: var(--white);
}

.section-dark .section-tag {
    color: var(--accent);
    background: rgba(184, 134, 11, 0.1);
    border: 1px solid rgba(184, 134, 11, 0.2);
}

.about-stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    transition: color 0.3s;
}

.about-stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
    transition: color 0.3s;
}

/* ============================================
   FAQ
   ============================================ */

.faq {
    padding: var(--section-padding);
    background: var(--cream);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.faq-item h4 {
    font-family: var(--font-body);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.faq-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ============================================
   CTA
   ============================================ */

.cta {
    padding: var(--section-padding);
    background: var(--dark);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--white);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.cta-content p {
    color: rgba(255,255,255,0.7);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-guarantee {
    margin-top: 1rem;
    font-size: 0.85rem !important;
    color: rgba(255,255,255,0.4) !important;
}

/* ============================================
   Contact Page
   ============================================ */

.contact {
    padding: var(--section-padding);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3,
.contact-form-wrap h3 {
    font-family: var(--font-body);
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--dark);
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    background: var(--cream);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item h4 {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.contact-item p {
    font-size: 0.9rem;
    color: var(--text-light);
}

.contact-social {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.contact-social h4 {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.social-link {
    display: inline-block;
    padding: 8px 16px;
    background: var(--cream);
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    color: var(--text);
    transition: all 0.2s ease;
}

.social-link:hover {
    background: var(--dark);
    color: var(--white);
}

/* Form */
.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 0.95rem;
    font-family: var(--font-body);
    background: var(--white);
    transition: all 0.3s ease;
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.06);
}

.form-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: #0B0B0F;
    padding: 80px 24px 32px;
    color: rgba(255,255,255,0.55);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    margin-top: 1rem;
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-col h4 {
    color: var(--white);
    font-family: var(--font-body);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.25rem;
}

.footer-col a {
    display: block;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 4px 0;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: var(--primary);
}

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.3);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 20px;
        --section-padding-sm: 56px 20px;
    }

    .nav-links {
        display: none;
    }

    .hero-stats {
        gap: 2rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

    .pricing-card--featured {
        transform: none;
    }

    .course-grid,
    .method-grid,
    .testimonial-grid,
    .learn-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-card,
.learn-card,
.method-card,
.testimonial-card,
.pricing-card,
.faq-item,
.culture-item {
    animation: fadeUp 0.6s ease backwards;
}

.course-card:nth-child(1) { animation-delay: 0.05s; }
.course-card:nth-child(2) { animation-delay: 0.1s; }
.course-card:nth-child(3) { animation-delay: 0.15s; }
.course-card:nth-child(4) { animation-delay: 0.2s; }
.course-card:nth-child(5) { animation-delay: 0.25s; }
.course-card:nth-child(6) { animation-delay: 0.3s; }